Table 2.

Proportion of Schizophrenia across strata of study covariates

Characteristic	All N = 30 108	Controls N = 25 090	SLE N = 5018	OR	p-value
Schizophrenia	276 (0.92%)	207 (0.83%)	69 (1.38%)	1.68 [1.27; 2.20]	<0.001
Gender
Female	210 (0.85%)	159 (0.77%)	51 (1.24%)	1.61 [1.16; 2.20]	0.005
Male	66 (1.22%)	48 (1.06%)	18 (1.99%)	1.90 [1.07; 3.23]	0.029
Age
0–19	3 (0.33%)	2 (0.26%)	1 (0.66%)	2.67 [0.08; 33.1]	0.495
20–39	65 (0.80%)	48 (0.71%)	17 (1.25%)	1.79 [1.00; 3.07]	0.052
40–59	134 (1.15%)	103 (1.07%)	31 (1.60%)	1.52 [1.00; 2.25]	0.052
60+	74 (0.79%)	54 (0.69%)	20 (1.27%)	1.87 [1.09; 3.09]	0.024
SES
Low	118 (1.04%)	98 (1.04%)	20 (1.00%)	0.97 [0.58; 1.53]	0.887
Medium	117 (1.12%)	86 (1.01%)	31 (1.61%)	1.61 [1.05; 2.41]	0.030
High	40 (0.72%)	23 (0.52%)	17 (1.55%)	3.04 [1.59; 5.70]	0.001
Smoking	129 (1.81%)	95 (1.76%)	34 (1.97%)	1.12 [0.75; 1.65]	0.565

SES, socioeconomic status; SLE, systemic lupus erythematosus; OR, odds ratio.